In order for DNA molecules to undergo
recombination,
a. they must be from the same species.
b. their strands must separate as in replication.
c. they must be cut and spliced at specific
nucleotide sequences.
d. one of the two DNA strands must be
degraded.
e. they must first be transcribed
C
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If a DNA molecule was a spiral staircase, what would the steps of the staircase be?
a. covalent bonds b. deoxyribose c. base pairs d. hydrogen bonds e. phosphate
When a diploid plant produces diploid gametes due to nondisjunction during meiosis, what occurs?
A. An increase in the number of chromosomes above the parent species occurs. B. Autoploidy is occurring. C. A triploid or tetraploid plant may occur. D. All of the answer choices are true.
A. Nasal cavity B. Pharynx C. Epiglottis D. Larynx E. Trachea F. Pleural membrane G. Left lung H. Bronchus I. Bronchiole J. Diaphragm K. Intercostal muscles
Women often receive synthetic oxytocin to induce childbirth or augment contractions. What is an important consideration about the use of synthetic oxytocin?
A. The synthetic form does not travel down motor neurons, so it is less effective than the natural form. B. If you fail to simultaneously provide synthetic G protein, the hormone is ineffective. C. It can be difficult to get the levels just right, so uterine contractions can be too strong. D. It is impossible to mimic its chemical structure, so it may act on other receptors and cause side effects.